mirror of
https://github.com/lwfinger/rtl8188eu.git
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576 lines
13 KiB
C
576 lines
13 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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*
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******************************************************************************/
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#ifndef _RTW_RECV_H_
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#define _RTW_RECV_H_
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#include <drv_conf.h>
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#include <osdep_service.h>
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#include <drv_types.h>
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#define NR_RECVFRAME 256
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#define RXFRAME_ALIGN 8
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#define RXFRAME_ALIGN_SZ (1<<RXFRAME_ALIGN)
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#define MAX_RXFRAME_CNT 512
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#define MAX_RX_NUMBLKS (32)
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#define RECVFRAME_HDR_ALIGN 128
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#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
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static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
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static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
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static u8 SNAP_ETH_TYPE_APPLETALK_DDP[2] = {0x80, 0x9b};
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static u8 SNAP_ETH_TYPE_TDLS[2] = {0x89, 0x0d};
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static u8 SNAP_HDR_APPLETALK_DDP[3] = {0x08, 0x00, 0x07}; // Datagram Delivery Protocol
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static u8 oui_8021h[] = {0x00, 0x00, 0xf8};
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static u8 oui_rfc1042[]= {0x00,0x00,0x00};
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#define MAX_SUBFRAME_COUNT 64
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static u8 rtw_rfc1042_header[] =
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{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
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/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
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static u8 rtw_bridge_tunnel_header[] =
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{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
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//for Rx reordering buffer control
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struct recv_reorder_ctrl
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{
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_adapter *padapter;
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u8 enable;
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u16 indicate_seq;//=wstart_b, init_value=0xffff
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u16 wend_b;
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u8 wsize_b;
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_queue pending_recvframe_queue;
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_timer reordering_ctrl_timer;
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};
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struct stainfo_rxcache {
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u16 tid_rxseq[16];
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/*
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unsigned short tid0_rxseq;
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unsigned short tid1_rxseq;
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unsigned short tid2_rxseq;
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unsigned short tid3_rxseq;
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unsigned short tid4_rxseq;
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unsigned short tid5_rxseq;
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unsigned short tid6_rxseq;
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unsigned short tid7_rxseq;
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unsigned short tid8_rxseq;
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unsigned short tid9_rxseq;
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unsigned short tid10_rxseq;
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unsigned short tid11_rxseq;
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unsigned short tid12_rxseq;
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unsigned short tid13_rxseq;
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unsigned short tid14_rxseq;
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unsigned short tid15_rxseq;
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*/
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};
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struct smooth_rssi_data {
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u32 elements[100]; //array to store values
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u32 index; //index to current array to store
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u32 total_num; //num of valid elements
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u32 total_val; //sum of valid elements
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};
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struct signal_stat {
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u8 update_req; //used to indicate
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u8 avg_val; //avg of valid elements
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u32 total_num; //num of valid elements
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u32 total_val; //sum of valid elements
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};
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#define MAX_PATH_NUM_92CS 2
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struct phy_info //ODM_PHY_INFO_T
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{
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u8 RxPWDBAll;
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u8 SignalQuality; // in 0-100 index.
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u8 RxMIMOSignalQuality[MAX_PATH_NUM_92CS]; //EVM
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u8 RxMIMOSignalStrength[MAX_PATH_NUM_92CS];// in 0~100 index
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s8 RxPower; // in dBm Translate from PWdB
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s8 RecvSignalPower;// Real power in dBm for this packet, no beautification and aggregation. Keep this raw info to be used for the other procedures.
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u8 BTRxRSSIPercentage;
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u8 SignalStrength; // in 0-100 index.
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u8 RxPwr[MAX_PATH_NUM_92CS];//per-path's pwdb
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u8 RxSNR[MAX_PATH_NUM_92CS];//per-path's SNR
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};
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struct rx_pkt_attrib {
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u16 pkt_len;
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u8 physt;
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u8 drvinfo_sz;
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u8 shift_sz;
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u8 hdrlen; //the WLAN Header Len
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u8 to_fr_ds;
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u8 amsdu;
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u8 qos;
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u8 priority;
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u8 pw_save;
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u8 mdata;
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u16 seq_num;
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u8 frag_num;
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u8 mfrag;
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u8 order;
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u8 privacy; //in frame_ctrl field
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u8 bdecrypted;
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u8 encrypt; //when 0 indicate no encrypt. when non-zero, indicate the encrypt algorith
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u8 iv_len;
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u8 icv_len;
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u8 crc_err;
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u8 icv_err;
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u16 eth_type;
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u8 dst[ETH_ALEN];
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u8 src[ETH_ALEN];
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u8 ta[ETH_ALEN];
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u8 ra[ETH_ALEN];
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u8 bssid[ETH_ALEN];
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u8 ack_policy;
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u8 key_index;
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u8 mcs_rate;
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u8 rxht;
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u8 sgi;
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u8 pkt_rpt_type;
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u32 MacIDValidEntry[2]; // 64 bits present 64 entry.
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struct phy_info phy_info;
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};
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//These definition is used for Rx packet reordering.
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#define SN_LESS(a, b) (((a-b)&0x800)!=0)
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#define SN_EQUAL(a, b) (a == b)
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//#define REORDER_WIN_SIZE 128
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//#define REORDER_ENTRY_NUM 128
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#define REORDER_WAIT_TIME (50) // (ms)
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#define RECVBUFF_ALIGN_SZ 8
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#define RXDESC_SIZE 24
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#define RXDESC_OFFSET RXDESC_SIZE
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struct recv_stat {
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__le32 rxdw0;
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__le32 rxdw1;
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__le32 rxdw2;
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__le32 rxdw3;
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__le32 rxdw4;
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__le32 rxdw5;
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};
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#define EOR BIT(30)
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/*
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accesser of recv_priv: rtw_recv_entry(dispatch / passive level); recv_thread(passive) ; returnpkt(dispatch)
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; halt(passive) ;
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using enter_critical section to protect
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*/
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struct recv_priv
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{
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_lock lock;
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_queue free_recv_queue;
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_queue recv_pending_queue;
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_queue uc_swdec_pending_queue;
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u8 *pallocated_frame_buf;
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u8 *precv_frame_buf;
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uint free_recvframe_cnt;
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_adapter *adapter;
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u32 bIsAnyNonBEPkts;
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u64 rx_bytes;
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u64 rx_pkts;
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u64 rx_drop;
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u64 last_rx_bytes;
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uint rx_icv_err;
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uint rx_largepacket_crcerr;
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uint rx_smallpacket_crcerr;
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uint rx_middlepacket_crcerr;
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_sema allrxreturnevt;
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uint ff_hwaddr;
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u8 rx_pending_cnt;
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#ifdef CONFIG_USB_INTERRUPT_IN_PIPE
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PURB int_in_urb;
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u8 *int_in_buf;
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#endif //CONFIG_USB_INTERRUPT_IN_PIPE
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struct tasklet_struct irq_prepare_beacon_tasklet;
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struct tasklet_struct recv_tasklet;
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struct sk_buff_head free_recv_skb_queue;
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struct sk_buff_head rx_skb_queue;
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#ifdef CONFIG_RX_INDICATE_QUEUE
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struct task rx_indicate_tasklet;
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struct ifqueue rx_indicate_queue;
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#endif // CONFIG_RX_INDICATE_QUEUE
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u8 *pallocated_recv_buf;
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u8 *precv_buf; // 4 alignment
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_queue free_recv_buf_queue;
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u32 free_recv_buf_queue_cnt;
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//For display the phy informatiom
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u8 is_signal_dbg; // for debug
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u8 signal_strength_dbg; // for debug
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s8 rssi;
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s8 rxpwdb;
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u8 signal_strength;
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u8 signal_qual;
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u8 noise;
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int RxSNRdB[2];
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s8 RxRssi[2];
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int FalseAlmCnt_all;
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_timer signal_stat_timer;
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u32 signal_stat_sampling_interval;
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struct signal_stat signal_qual_data;
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struct signal_stat signal_strength_data;
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};
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#define rtw_set_signal_stat_timer(recvpriv) _set_timer(&(recvpriv)->signal_stat_timer, (recvpriv)->signal_stat_sampling_interval)
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struct sta_recv_priv {
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_lock lock;
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sint option;
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//_queue blk_strms[MAX_RX_NUMBLKS];
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_queue defrag_q; //keeping the fragment frame until defrag
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struct stainfo_rxcache rxcache;
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//uint sta_rx_bytes;
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//uint sta_rx_pkts;
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//uint sta_rx_fail;
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};
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struct recv_buf
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{
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_list list;
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_lock recvbuf_lock;
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u32 ref_cnt;
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PADAPTER adapter;
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u8 *pbuf;
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u8 *pallocated_buf;
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u32 len;
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u8 *phead;
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u8 *pdata;
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u8 *ptail;
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u8 *pend;
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PURB purb;
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dma_addr_t dma_transfer_addr; /* (in) dma addr for transfer_buffer */
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u32 alloc_sz;
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u8 irp_pending;
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int transfer_len;
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_pkt *pskb;
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u8 reuse;
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};
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/*
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head ----->
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data ----->
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payload
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tail ----->
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end ----->
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len = (unsigned int )(tail - data);
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*/
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struct recv_frame_hdr
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{
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_list list;
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struct sk_buff *pkt;
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struct sk_buff *pkt_newalloc;
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_adapter *adapter;
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u8 fragcnt;
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int frame_tag;
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struct rx_pkt_attrib attrib;
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uint len;
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u8 *rx_head;
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u8 *rx_data;
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u8 *rx_tail;
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u8 *rx_end;
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void *precvbuf;
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//
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struct sta_info *psta;
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//for A-MPDU Rx reordering buffer control
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struct recv_reorder_ctrl *preorder_ctrl;
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};
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union recv_frame{
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union{
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_list list;
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struct recv_frame_hdr hdr;
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uint mem[RECVFRAME_HDR_ALIGN>>2];
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}u;
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//uint mem[MAX_RXSZ>>2];
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};
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extern union recv_frame *_rtw_alloc_recvframe (_queue *pfree_recv_queue); //get a free recv_frame from pfree_recv_queue
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extern union recv_frame *rtw_alloc_recvframe (_queue *pfree_recv_queue); //get a free recv_frame from pfree_recv_queue
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extern void rtw_init_recvframe(union recv_frame *precvframe ,struct recv_priv *precvpriv);
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extern int rtw_free_recvframe(union recv_frame *precvframe, _queue *pfree_recv_queue);
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#define rtw_dequeue_recvframe(queue) rtw_alloc_recvframe(queue)
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extern int _rtw_enqueue_recvframe(union recv_frame *precvframe, _queue *queue);
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extern int rtw_enqueue_recvframe(union recv_frame *precvframe, _queue *queue);
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extern void rtw_free_recvframe_queue(_queue *pframequeue, _queue *pfree_recv_queue);
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u32 rtw_free_uc_swdec_pending_queue(_adapter *adapter);
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sint rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, _queue *queue);
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sint rtw_enqueue_recvbuf(struct recv_buf *precvbuf, _queue *queue);
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struct recv_buf *rtw_dequeue_recvbuf (_queue *queue);
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void rtw_reordering_ctrl_timeout_handler(void *pcontext);
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__inline static u8 *get_rxmem(union recv_frame *precvframe)
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{
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//always return rx_head...
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if (precvframe==NULL)
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return NULL;
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return precvframe->u.hdr.rx_head;
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}
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__inline static u8 *get_rx_status(union recv_frame *precvframe)
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{
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return get_rxmem(precvframe);
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}
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__inline static u8 *get_recvframe_data(union recv_frame *precvframe)
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{
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//alwasy return rx_data
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if (precvframe==NULL)
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return NULL;
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return precvframe->u.hdr.rx_data;
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}
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__inline static u8 *recvframe_push(union recv_frame *precvframe, sint sz)
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{
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// append data before rx_data
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/* add data to the start of recv_frame
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*
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* This function extends the used data area of the recv_frame at the buffer
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* start. rx_data must be still larger than rx_head, after pushing.
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*/
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if (precvframe==NULL)
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return NULL;
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precvframe->u.hdr.rx_data -= sz ;
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if ( precvframe->u.hdr.rx_data < precvframe->u.hdr.rx_head )
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{
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precvframe->u.hdr.rx_data += sz ;
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return NULL;
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}
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precvframe->u.hdr.len +=sz;
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return precvframe->u.hdr.rx_data;
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}
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__inline static u8 *recvframe_pull(union recv_frame *precvframe, sint sz)
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{
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// rx_data += sz; move rx_data sz bytes hereafter
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//used for extract sz bytes from rx_data, update rx_data and return the updated rx_data to the caller
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if (precvframe==NULL)
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return NULL;
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precvframe->u.hdr.rx_data += sz;
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if (precvframe->u.hdr.rx_data > precvframe->u.hdr.rx_tail)
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{
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precvframe->u.hdr.rx_data -= sz;
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return NULL;
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}
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precvframe->u.hdr.len -=sz;
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return precvframe->u.hdr.rx_data;
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}
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__inline static u8 *recvframe_put(union recv_frame *precvframe, sint sz)
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{
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//used for append sz bytes from ptr to rx_tail, update rx_tail and return the updated rx_tail to the caller
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//after putting, rx_tail must be still larger than rx_end.
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if (precvframe==NULL)
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return NULL;
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precvframe->u.hdr.rx_tail += sz;
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if (precvframe->u.hdr.rx_tail > precvframe->u.hdr.rx_end) {
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precvframe->u.hdr.rx_tail -= sz;
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return NULL;
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}
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precvframe->u.hdr.len +=sz;
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return precvframe->u.hdr.rx_tail;
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}
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__inline static u8 *recvframe_pull_tail(union recv_frame *precvframe, sint sz)
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{
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// rmv data from rx_tail (by yitsen)
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//used for extract sz bytes from rx_end, update rx_end and return the updated rx_end to the caller
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//after pulling, rx_end must be still larger than rx_data.
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if (precvframe==NULL)
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return NULL;
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precvframe->u.hdr.rx_tail -= sz;
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if (precvframe->u.hdr.rx_tail < precvframe->u.hdr.rx_data)
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{
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precvframe->u.hdr.rx_tail += sz;
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return NULL;
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}
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precvframe->u.hdr.len -=sz;
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return precvframe->u.hdr.rx_tail;
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}
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__inline static _buffer * get_rxbuf_desc(union recv_frame *precvframe)
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{
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_buffer * buf_desc;
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if (precvframe==NULL)
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return NULL;
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return buf_desc;
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}
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__inline static union recv_frame *rxmem_to_recvframe(u8 *rxmem)
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{
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//due to the design of 2048 bytes alignment of recv_frame, we can reference the union recv_frame
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//from any given member of recv_frame.
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// rxmem indicates the any member/address in recv_frame
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return (union recv_frame*)(((SIZE_PTR)rxmem >> RXFRAME_ALIGN) << RXFRAME_ALIGN);
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}
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__inline static union recv_frame *pkt_to_recvframe(_pkt *pkt)
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{
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u8 * buf_star;
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union recv_frame * precv_frame;
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precv_frame = rxmem_to_recvframe((unsigned char*)buf_star);
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return precv_frame;
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}
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__inline static u8 *pkt_to_recvmem(_pkt *pkt)
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{
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// return the rx_head
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union recv_frame * precv_frame = pkt_to_recvframe(pkt);
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return precv_frame->u.hdr.rx_head;
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}
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__inline static u8 *pkt_to_recvdata(_pkt *pkt)
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{
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// return the rx_data
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union recv_frame * precv_frame =pkt_to_recvframe(pkt);
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return precv_frame->u.hdr.rx_data;
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}
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__inline static sint get_recvframe_len(union recv_frame *precvframe)
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{
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return precvframe->u.hdr.len;
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}
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__inline static s32 translate_percentage_to_dbm(u32 SignalStrengthIndex)
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{
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s32 SignalPower; // in dBm.
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// Translate to dBm (x=0.5y-95).
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SignalPower = (s32)((SignalStrengthIndex + 1) >> 1);
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SignalPower -= 95;
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return SignalPower;
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}
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struct sta_info;
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extern void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
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extern void mgt_dispatcher(_adapter *padapter, union recv_frame *precv_frame);
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#endif
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